DE1949284A1 - Electrical power distribution device - Google Patents

Description

M 2687

Minnesota Mining and Manufacturing Company _f Salat Paul Minnesota 55101 (Y.St.v.A.) Electrical energy distribution device

The invention relates to a device for distributing electrical energy.

The device according to the invention causes the distribution of a predetermined electrical energy elements in the form of a predetermined series of intermittent pulses. 3) 1® facility is switchable from a controlled distribution of electrical Intermittent borrowing energy in predetermined? Intervals within a predetermined period of time to a controlled distribution of electrical energy in intermittent Intervals within an indefinite period of time · You control the energy distribution is carried out »even if the Power supply is interrupted for a short time · The device according to the invention can be programmed in such a way that the power distribution

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is done in accordance with the sur energy available regardless of the variable number of electricity to be supplied Consumers or their different services.

The invention can be applied, for example, to a pulse cooking and heating system in which each food container heated by resistance heating is to be supplied with a predetermined amount of heat in predetermined series of on and off times within a predetermined cooking period. In practice, it is desirable to supply several consumers with energy in such a way that each individual consumer receives essentially the energy required within a predetermined cooking period, and that the number of consumers to be supplied with energy at a given time is predetermined _f that the available energy is used in the most favorable way. The amount of heat that is supplied to a consumer in the form of pulses within the predetermined time period is approximately equal to VT / R, where V is the average voltage across the consumer, R is the average resistance of the consumer during the predetermined time period and T is the sum of the pulse times ·

By changing the energy distribution intervals and by switching the energy distribution to different ones in sequence Combinations of selected consumers, pulsed cooking and heating according to the invention can be carried out. With the device according to the invention, electrical energy can be distributed from single-phase or multi-phase electricity sources.

The device according to the invention should also provide the possibility take into account that the energy supply is interrupted at a point outside the distribution facility. The device according to the invention should be in such a. trap remember what amount of energy has already been supplied and when the power supply is restarted, only supply as much energy as the predetermined amount of energy is missing.

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The energy distribution device according to the Erf iafeig has the features mentioned above.

The device mentioned is also intended to ensure ₉ that “food is kept warm after cooking is finished. 3) ± @ ε can be achieved by intermittently supplying «,« to the consumer within a non-time period.

Facilities are known which provide intermittent supply within a predetermined period. Cause idle period. As an example such a liarie & tysf throw, © in with a timer and a thermostat E ^ ege3 ⁱ 5att3S ⁱ electric oven * Such a unit & g eats jstloeli. the determination of the power supply integ-yalle 'ra ^ siwe visual fluctuations and can, no ISü ^ giiT ^ ev ^ gimg in predetermined borrowing of Energieiiapiilsen ä ^ resftiteer ...

In another known Einriehtuisiy "aind motsri93h operated timer with docken sraasmM ^ i z & ü '^' h ^ c ^ -mf ': ei! I \ inMGkmn switches provided by öer; ä-aok ^ fee ^; rt ^ .g ;, ^ 1 · ?, i; eispi *? L for such a device a sis * fsi Sage iis ^^ itöBdeir timer for switching on and off, a supply unit is cited. With this known linrichtuxig can be used for a predetermined amount of energy Intermittent energy impulses can be carried out in lOra eiaies · Seili®? Te ^ bratioliern or their special energy requirements.

The following is an example of the practice of the invention an impulse cooking and <4iei2av.lage beeettr-ieteßsu Xn'den enclosed Drawings is you

1 a circuit diagram for a Einriohtyng sum distribution of electrical energy in a VorhertfeetisKateii loan sequence on five consumption. * R ^ ms & τς ± "ffeascK. © insr

Three-phase W ^ chselrtro "τζ * ~ ί le,
009816/12 91

Pig · 2 an overview showing the interconnection of the Fig. 1 shows switching elements shown,

3 an overview of the order in which the consumer from the device according to Figol with energy are supplied, and the

Figo4 another embodiment of that part of the in Fig «1 device shown, which is for the preparation of the bed = men of the series of energy supply to consumers is used, and the five consumers from a single-phase power source powered.

1 shows a circuit diagram for an embodiment of a device, cLie five consumers 40-44, for example qmb two phases of a three-phase power source with four conductors IT, G ₉ B, A supplied with electrical energy · Between the currents and the consumers a contact network 46 is connected with which the energy distribution can be programmed to the consumers essentially evenly within a predetermined period of time. The consumers are connected to the various contacts in the first switch section, g «-J _a to the rotary step switches 47 and 48. These switches are periodically actuated by a timer circuit 49, the contact arm advancing by one contact at a time. The step switches 47 and 48 simultaneously establish a connection with one contact a - j each. In this embodiment, the connections between the consumers 40-44 and the step switches 47 and 48 are programmed so that only two consumers receive power, and that a pole of two switch-on times and three switch-off times are provided for each consumer. This type of power supply is shown in Fig.3. The contact network 46 contains a second switch section, for example the Eelaiskoatakt® 50 and 51, which are switched on in the IiBgaagsleiter going out from the power source. The setting of the relay contact © 50 and 51 is also determined by the timer circuit 49. The relay contacts 50 and 51 are closed only during the Baterv: _! 1 · "between the periodic advancement of the rotary steps 47 and 48. This creates a

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Sparks or arcing on the contacts of the stepper switches Avoided while advancing · Bas' network of contacts 46 could also be set up for power distribution from a single-phase or three-phase power source. The chronological order the interval is not limited to two switch-on times and three switch-off times after Pig «1, but can to be chosen at will. In the case of the one shown in FIG and version connected to a binary phase power source is a switch-on time that includes one switching step and one or two switching steps for each consumer Switch-off time provided.

The time period in which the consumers should receive electricity, is predetermined by the values of the elements in the pulse timer latch 52 as well as the predetermined setting the Kurzsohlusschalters 53 and the connection between this switch and the rotary step switch 54 · The pulse timing circuit 52 and the switch 54 together constitute a counter. The timing circuit 52 determines the speed, with which the step switch 54 rotates · The connection between the short circuit switch 53 and the step switch 54 determines how often the step switch 54 rotates depending on the pulses generated by the timer circuit 52 » After the step switch 54 has carried out a predetermined number of holding holes, the operation changes the timer circuit 49 and thus the power distribution sequence. In the circuit shown in FIG the operation of the timer 49 in such a way that the step switches 47 and 48 held on less often and the contacts 50 and 51 are closed so that consumers can receive electricity in a period of time that is relatively cheap is in comparison to the time between the switching steps and in comparison to the power supply time »at the first Type of energy distribution in which a predetermined amount of energy is distributed within a predetermined period of time The circuit remains in the setting for the second mode of operation, in which the power is supplied less often, until

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the control device is either turned off and switched back to the first working example _ö The energy distribution to consumers during the second operation can be set up to compensate for a power loss after the power distribution after the first operation. The connections for the second mode of operation can also be programmed in such a way that the timer is set to an endless switching interval, so that the energy distribution for the consumer is switched off. The second mode of operation in power distribution can therefore be an appearance mode.

In the case of the invention shown in Fig. 1, the timers 49 and 52 are supplied with Si? 2? Om via the neutral conductor land & ®n for a phase specific conductor of the power source, so that in the event of a brief interruption of the power supply work of the two timers 49 and 52 also interrupted · both timers can continue their work again and need not surtiokgestellt to the beginning of their working sequence below, it that it were a Erinaerwiigavermögen have the amount of energy has already been supplied to consumers, with nmr the predetermined amount of energy is delivered despite: brief interruption of the prescribed supply period "

The individual Schaltungselemente® of the facility become more than a hundred described in fig «1 and how it works · Must first the Sicherheit®aehalter 55 are closed so that the device Get current®, Irena «If switch 55 is open, see © the EelaiskoawS & t © 50 and 51 are not activated by the timer 49 and remain open, s © iaas tie consumers 40-44 none Receive electricity

The GleiohriGhter briquettes ^ Bg-Q ^ 56 and 57 produce ssw @ l different® DC voltages for cli © control device.

The working knowledge "of the energy distribution is determined" according to the corresponding Einet®ll @ & dee Eus ^ aehlueechalters 53 "This switching circuit

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is mechanically linked to the timer switches 59 »60» with the switch 61 and the on-off switch 62 so that all five switches move simultaneously to settings a - i.

The rotary step holder 47 and 48 are pushed further, when a sufficiently strong current flows through the coil 63. After the coil 63 is a port switch, the step switch 47 and 48 caused normally closed breaker contacts 64 to open. Resistor 65 holds a weak one Current flow through the coil 63 is maintained and prevents overheating of the coil. The normally closed relay contacts 66 are opened when a sufficiently strong current flows through the coil 67 of the timer. In this case it will be relay contacts 50 and 51 of the contact network are also closed

If a current flows through the pulse timer coil 68, the normally open relay contacts 69 are closed. Flows a current through the coil 70, the step switch 54 is actuated, and the normally closed interruption contacts 71 are opened. The switch 45 is with the rotating mechanism of the step switch 54 is connected. The switch 45 is open when the step switch 54 is in switch position a stands, and is closed when the step switch 54 advances to the settings b_ - z_.

If the relay coil 72 receives current, the normally open relay contacts 73 are closed, and those normally closed relay contacts 74 are opened. A timer circuit section also responds to the flow of current through the coil 72, like relay contacts 75 and 76. At this time, the normally open contacts 75 are closed and the normally closed contacts 76 are opened.

A diode 77 protects the relay contacts 66 by deriving transition voltages that are in the coil 63 when the Current flow can be induced through the coil 63.

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A varistor 78 dissipates transient voltages that are in the coil 70 are induced when the current flow is interrupted

The capacitor 79 removes the ripple of the DC voltage from the rectifier bridge 57.

In the pulse timing circuit 52, the resistors 80 set and 81 and the potentiometer 82 represent a voltage divider network connected to the control electrode of a programmable transistor 83 is connected. This can be achieved by appropriate selection of the values for resistor 84 and capacitor 85 Interval can be predetermined in which the transistor 83 conducts a current pulse through the coil 68.

The pulse timer circuit 52 guides the rotary step switch a switching pulse at predetermined periodic intervals. For this reason, the door of the counter became a step switch

at
chosen because this remains in the current rotary position in the event of an interruption in the power supply, and because of the possibility of selecting different timing intervals «

The timer circuit 49 must have a programmable power supply and switching interval times for the electrical distribution Effect or determine energy on the consumer. Sin Inevitable switching on or off is caused by two transistors 86 and 87 which are connected together with a feedback to form a bistable circuit. About the Resistance «88 and 89, a bias voltage is applied to the base electrodes of the transistors 86, 87, while a bias voltage is applied via the resistor 90 is applied to the common connection point of the emitter electrodes of the transistors 86, 87. Will the transistor 86 put in the conductive state, the current flow is interrupted by the resistor 104, so that the transistor 87 is blocked with the result that a current through the Resistor 110 flows, the fully conductive state of transistor 86 being maintained. By creating an outer Pre-tension kaim the transit gate 87 in the conductive state

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are offset with the result that the conductive transistor 86 (in the absence of an external signal) is blocked

The bistable needs to be switched on and off continuously Switching brief external biases at predetermined time intervals. The timing is done by means of an R-C circuit, while the required external voltage pulse is through the discharge of the capacitor 99 or 105 is generated via a programmable transistor 91 or 92 to the base electrode of the transistor 86 or 87. The programmable transistors 91 and 92 are connected together so that the base electrodes the transistors 86 and 87 are alternately supplied with pulses. The resistors 93 and 94 form together with the potentiometer 95 a voltage dividing network connected to the control grid of the programmable transistor 91, while the Resistors 96 and 97 together with the potentiometer 98 form a voltage dividing network that is connected to the control grid of a programmable transistor 92 is connected

Two E-0 circuits and the programmable transistors 91 and effect the pulse control of the timer circuit 49.The work of the programmable transistor 91 is initiated when the collector voltage of the transistor 86 increases, with a charging current through the connected resistors 100, 101, 102 or 103 flows. If the voltage across the capacitor 99 and the anode of the transistor 91 is approximately O ₉ 6 volts higher than the voltage across the grid of the transistor 91, the transistor 91 is conductive and connects the capacitor 99 to the base electrode of the transistor 86, so that this becomes conductive. The other transistor 87 is then blocked, and the time-determined pulse generation of the other programmable transistor 92 is initiated, the transistor 87 being switched to the conductive state again after a period of time which depends on the values of the resistor 106, 107, 108 or 109 and of the capacitor and the voltage at the grid of transistor 92 · Me potentiometers 95 and 98 are used to regulate the gridapaanungen of transistors 91 and 92 and to compensate for the deviation & τ values & ®f capacitors

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99 and 105 of the! Characteristic values.

The different timing resistors 100-103 and 106-109 in the timing circuit 49 allow various choices Switching and power supply times for the distribution of the electrical energy to consumers

If the switches 53 and 59-62 are in setting a, the control device is switched off, the step switch 54 does not automatically set itself to the starting position. The jump from the setting ad "ßleitungsschaltung rs 60 to the emitter" prevents the Sraßssi © gate circuit stalling a current flow through the relay coil 67 ,. If the timing switches 59 and 60 are in the settings b and tf, then timing resistors for other predetermined power supply and duration times are selected for the second mode of operation. With the remaining six settings ä - i, the power supply «and switching periods are determined for an initial mode of operation in energy distribution; while the auxiliary coil 72 receives power, and for a second mode of operation, when the predetermined period has elapsed and the relay coil 72 is de-energized »The predetermined period is _{different for each of the last six settings, d - J 1} and is determined by the setting of the circuit breaker 53 is determined.

The resistor 111 forms the load resistance for the transistor 87 »while the block 112 protects the transistor 86 against temporarily occurring voltages, which are induced in the timing circuit, indicating the boil readjusted operation for Snergievortoilimg © _s while the end of cooking sais & igesd "Sampö 114 burns when DI® circuit to the second Arbeitsw @ tgr® power distribution is set · you seiigt lamp 113 Salian wt _f that the food cooking, while the lamp · I14 shows ₉ ä & mm that food has been cooked.

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- 1t -

To the Energieverteilungseinriehtung on the first way of working to switch on, the short circuit switch 53 is turned so far, that the contacts a - d are connected to one another. At the same time, the timing switches 59 and 60 are rotated as well the switch 61 and the on-off switch 62, which switches are now in setting d. The rotary step switch 54 starts with the setting on the contact a. The device is put into operation by closing the safety switch 55 Assuming that the transistor 86 is conductive first, a current flows through the relay coil 67, whereby the relay contacts 50 and 51 are closed, which allow a power supply of the consumers 40 - 44, furthermore are at the same time the relay contacts 66 open, so that the flow of current through the relay coil 63 is interrupted conductive, a current also flows through resistor 107, with the result that the voltage at the anode within the RC time of transistor 92 rises so far that capacitor 105 is discharged to the base electrode of transistor 87, the Transistor 87 is conductive and transistor 86 is blocked. In this case, the current flow through the coil 67 stops, see above that the relay contacts 50 and 51 are opened and prevent a power supply of the loads 40-44, while the relay contacts 66 are closed, so that a current flows through the interrupter contacts 64 and through the coil 63 can. At the beginning, a current with a first current intensity flows through the coil, which is used to switch the step switch 47 and 48 is sufficient. Due to the flow of current through the coil 63, however, the breaker contacts 64 open, and through the coil 63 flowing current is diverted via the resistor 65, whose resistance value is so large that the Amperage of the current flowing through the coil 63 is reduced. In this way, the heating of the coil 63 is reduced However, the current strength is sufficient to keep the breaker contacts 64 open.

Hach the rotation of the short circuit switch 53 and the switch 61 in the rotary position d, a current flows through the coil 72, with the relay contacts 73 and 75 closed and the relay

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Contacts 74 «76 are opened · after the contacts 73 are closed, a current flows through the pulse timing circuit 52, starting with the counting of the time in which the energy is distributed after the first mode of operation. According to the values selected for EO in the pulse timer © setting, the programmable transistor 83 * causes the relay coil 68 to periodically receive a current pulse with the result that the normally open relay contact 69 is closed so that a current can flow through the coil 70, whereby the step switch 54 is rotated. With each pulse mim of the pulse timing circuit 52, the step switch 54 is therefore rotated further by one contact point, a further time interval being counted in the first mode of operation of the energy distribution. Is at a setting of short-ehalt s ^ s 53 to the contact 54 like the step switch to the setting © lim3g J ₁ j rotated so WI3? <8th the power supply of the Beiais coil 12 over it ¹ the switch 53 interrupted. The relay contacts 73 and 75 are opened and the relay contacts 74 and 76. When the selector contacts 73 open, the rotation of the step holder 54 is ended. When the relay contacts 75 are opened and the relay contacts 76 are closed, the RC conditions for the transistors 86 and 87 are changed and thus the timing periods of the timing circuit 49, so that the energy distribution takes place according to the second mode of operation. The energy distribution is then continued according to this second mode of operation until the entire device is switched off. As with the first mode of operation, if the current flow through the coil 67 is sufficiently strong, contacts 50 and 51 of the contact network are closed, while the relay contacts 66 are opened and the current flow through the coil 63 is terminated. Here the breaker contacts © 64 are closed again »

The timing circuit 49 begins to work according to the second mode of operation in the energy distribution when the short circuit switch 53 is guided either in the lens division b or c, whereby at the same time ü ± e I @ itg © lmngs container 59 and 60, the so holder 61 and d © r 5izfeO.uasehalter 62 in setting b or c

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can be rotated · The total duration of the first working method can be predetermined by turning the short circuit switch 53 in the settings d - i.

At the end of the predetermined period in the first mode of operation the step switch 54 stops shortly before setting a. To reset the step switch 54, the short-circuit switch 53 is turned to setting a. Here are at the same time the associated switches 59-62 turned to setting a. If the two timing switches 59 and 60 are in setting a, the timing circuit 49 does not cause any closing of contacts 50 and 51 of the contact network, since the loads cannot be supplied with power, and there is no power can flow through the relay coil 72. The pulse timing circuit 52 therefore cannot operate. However, Ss is included Current via the breaker contacts 71 and through the coil 70 Although the switch 62 is open, the switch 45 is closed because the step switch 54 is in a different setting than in setting a, so that a voltage is applied of the coil 70 is * It can therefore a current through the contact 61a the breaker contacts 71 and flow through the coil 70. Here, the step switch 54 is rotated one contact point further, and the breaker contacts 71 are opened When the breaker contacts 71 open, the current flow through the coil 70 ceases and the breaker contacts 71 become closed again, so that a current can flow through the coil again, the step switch 54 being turned further by one contact point. However, if the step switch 54 reaches setting a, the switch 45 is opened and the power distribution device stopped, whereby further rotation of the step switch 54 is prevented

The control device described so far can be used together with a pulse co-heating and heating system. At a Embodiments are five through the contact network 46 Resistance heating pots to be heated from jiner 400 Hz 200 Yolt Dreiphaenweohselstroraquelle with four conductors with electricity

provided.

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The one removed via the neutral conductor and another conductor Current is rectified by the rectifier bridge 56 and a direct current with a voltage of 115 volts is generated. The bridge circuit 57 receives the alternating current from a the Spanming-reducing transformer 58. The output of the bridge circuit 57 consists of a direct current with a Voltage of approximately 28 volts, the ripple of which is removed by a capacitor 79. The total dead time is determined by that by appropriately setting the short-circuit switch 53 four to 9 contacts of the contacts a - j [of the step switch 54 connected with each other, the shortest Cooking time is switched on if only the contacts a - d are connected to each other, during the longest cooking time through Connect the contacts a - J, with each other switched on During cooking, the indicator lamp 113 lights up. At the end of the predetermined cooking time, the timer causes the control device works according to the second mode of operation and only supplies the pots with the heat required to keep them warm, until the saucepans are removed from the facility. After the predetermined period of time has elapsed, the Cooking lamp 114 and the lamp 114 is turned on.

In the embodiment shown in Figure 1, the energy is supplied in pulse trains, as shown in Figure 3. Here, each saucepan is heated for about 20 seconds with a heating interruption of 30 seconds. The total cooking time fm range of 9 minutes with a setting of the course switch 53 »n £ the contact ü. up to 25 minutes of setting the eye 53 to contact 1, when setting the contacts b tm £ m ©, the energy distribution takes place in a different way to keep the% -sis © n warm, the difference being that lies that the sesrioden of yes 63-3 / 4 seconds every consumer 1-1 / 2 Sektmä-m long old energy is supplied with the setting of the Ss & eTJrers mx £ the contact b while with a setting of the SekarSsrs ms £ äen Contact £ each consumer for 2-1 / 2 seconds in PerlMois. from 67 1/2 se © is supplied with energy The Schxdätsehalter 47 and 48

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are turned once to setting b_ within 12-3 / 4 seconds and once to setting j3 within 13-1 / 2 seconds. For the setting b_ of the timing switches 59 and 60, the power supply and switching times are 3/4 seconds and 12 seconds, respectively. predetermined. ? 3 ÜR the Einstellimg it be the relevant periods 1-1 / 4 BEZW x 12 seconds d for the settings - i 10 _e are BEZW 1/2 sec _e provided during the first operation, while the periods concerned BEZW at 1. 12 seconds are intended for the second mode of operation after the contacts 75 have opened and the contacts 76 closed. The pulse timer circuit 52 generates current pulses about once per minute *

In the embodiment described, circuit elements with the values listed below and the brands mentioned were used used*

Resistor 65 Resistor 80 Resistor 81 Resistor 82 Resistor 84 Resistor 88, Resistor 90 Resistor 93, Resistor 94, Resistor 95, Resistor 100,102,103 Resistor 101 Resistor 104, Resistor 106 Resistor 107 Resistor 108 Resistor 109 Resistor 111 capacitor 79 capacitor 85 capacitor 99,

500 ohm 10 kiloohm 27 kiloohm 25 kiloohm 1.3 megoiam 8.2 kiloohm 27 0hm 15 kiloohm 39 kiloohm 25 kiloohm 560 kiloohm 22 kiloohm 3.9 kiloohm 470 kiloohm 47 kiloohm 82 kiloohm 39 kiloohm 300 0hm 4700
47
22nd

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Transistor 85 »91, 92

Transit gate 86, 87

Rectifier bridge 56 diodes, Diode 77

Rectifier bridge diodes 57 »diode 112

Transformer 58

Timing relay with coil 67 land with the Contacts 50.51 * 66

Step switch with coil 63j step switch 47, 48, contacts 64

Eelais with coil 68 and contacts 69

Step switch with coil 70, switch 45, contacts 71, step switch 54 with Varistor 78

Relay with coil 72 and with contacts 73, 74, 75, 76

Switch arrangement with switches 53, 59, 60, 61 ₉ 62

programmable transistor with a transition point type D13t2, manufacturer: General Electric Company of Syracuse, New York

PJSiP transistor Type 2Λ3404 Manufacturer General Electric Company of Syracuse, New York

rated for 2 A / 400 PIV

rated for 2 A / 100 PIV

Single-phase transformer 20 VA _ß 115/18 volts, 600/400 Hz

Model 110-4442 Relay Manufactured by Ward Leonard of Mount Vernon, New York

Model 250-384-046 manufactured by Ledex Company of Dayton, Ohio

Model W102RMPCX-3, manufactured from Magnecraft Company of Chicago, Illinois

Model EM-95V manufactured by Automatic Electric Company of Northlake, Illinois

Model CR12QG20303, manufactured » from General Electric Company of Syracuse, New York

Manufacturer »Centralab, Division of Globe Union of Milwaukee, Wisconsin, Model PA-301 shaft and a Model PA-12 sum short of sections of switch 53, three Model PA-O sections for the switches 59, 60 sand 61 and a model PA-1 section for switch 62

Claims

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Claims (1)

- 17 - Claim Device for controlling the distribution of electrical energy from a power source to consumers in predetermined borrowing intermittent on and off times within a predetermined period of time, marked through a consumer contact network (46) for connecting the connections of the power source to the connection contacts a number of consumers, which contact network comprises a first switching section (4-7, 48 "i) with a Number of settings, with the switching section in each Setting consumer connection terminals in certain Combinations with the connections of the power source connects, and a second switching section (50, 51) with two settings, which is connected between the power source and the first switching section, which second switching section in the first setting, the distribution of electrical energy via the first switching section from the Power source on the combination of consumer connection ~ prevents jamming, and in the second setting allows such an energy distribution, thanks to a timing circuit (49), which is connected to the consumer contact network and during a switching interval the the second switching section is set to the first setting, and the first setting during each switching interval Switching section is sequentially moved to a different setting, and that during a power supply interval set the second stop section to the second setting, during the first switching section its setting does not change which timing circuit is used for power distribution can be operated in at least a first and a second mode of operation, the timing circuit in at least one mode of operation repeatedly and periodically between programmed and repeated power supply and switching intervals works, whereby the Ö09816 / 1297 Combinations of the duration of the mentioned intervals for others Ways of power distribution are different, which timing circuit a switching section (75, 76) for switching to different modes of operation and a counter (52, 54), which is in connection with the connection terminals of the power source and with the timing circuit, and which counts the period of time in which the energy is transferred to the consumer connection terminals in a first mode of operation is distributed, which counter is connected to the switching section of the timing circuit and this from the first Mode of operation switches to the second mode of operation in energy distribution after the counting has a predetermined one Has been operating for a period of time, with a predetermined series of intermittent switch-on and switch-off intervals for the distribution of electrical energy to the connection terminals during a given load a given mode of operation is determined by the connection between the first switching section and the consumer connection terminals and the duration of said programmed power supply and the switching intervals for which the timer circuit works in a given mode of operation for power distribution » 2 · Device according to claim 1, characterized in that the timing circuit contains a bistable circuit, which distribute the energy for a given mode of operation ment is conductive in one operating state for a period of time that corresponds to a switching interval, and that in the other The operating state is conductive for a period of time which corresponds to the specified power supply interval. 3 · Device according to claim 1, characterized in that said counter is an Iaptilss eitgebungs circuit (52) contains current pulses in predetermined periodic intervals, and that with the impulse control circuit a step switch (54) connected, which is advanced by one step with each current pulse supplied 009816/1297 Einrichtimg according to claim 3, characterized by a Switch (53)> which is connected to the step switch and determines a holding position »at which the counter causes that the timing circuit will divide the power way changes, and in which the pulse timing circuit is switched off. β device according to claim 4-, characterized by a Circuit (61a, 70, 71) that controls the step switch in returns to its original position after the pulse timing circuit has been taken out of service 009816/1297